Allow alias value to be an array. COOK-1660

README.md

@@ -123,6 +123,9 @@ template to the `templates/default` or to the appropriate
 platform+version directory per the File Specificity rules for
 templates. Then specify a hash of aliases for the
 `node['postfix']['aliases']` attribute.
+Arrays are supported as alias values, since postfix supports
+comma separated values per alias, simply specify your alias
+as an array to use this handy feature.
 
 http://wiki.opscode.com/display/chef/Templates#Templates-TemplateLocationSpecificity
 

templates/default/aliases.erb

@@ -7,5 +7,5 @@
 postmaster:    root
 
 <% node['postfix']['aliases'].each do |name, value| %>
-<%= name %>:  "<%= value %>"
+<%= name %>: <%= [value].flatten.map{|x| %Q("#{x}")}.join(', ') %>
 <% end unless node['postfix']['aliases'].nil? %>